Well that is where the confusion is. I dont know if I should do it based on the admitting diagnosis ( ARf and the hyperkalemia) or on his current status. Like I said his K+ levels were WNL, no IV drips infusing, nor any cardiac monitoring, VS wnl. Only his creatine and BUN were still elevated suggesting the renal impairment was not fully resolved. So i thought I would do "Risk for" diagnosis'.based on his admitting diagnosis if possible. However the only current abnormalities are the BUN and creatinine and for that I could only think of "Ineffective tissue perfusion". In response to the dehydration , no h/o UTI but he had been hospitalized 6mos ago for dehydration and he reported not drinking enough fluids very matter of a factly. Patient is rather active, lives alone (wife died 3 mths ago) I'm sorry to hear abot daytonite.